Revert "ima: Introduce ima-ns-sig template"

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4O25G
CVE: NA

--------------------------------

This reverts commit a847fd9b.
Signed-off-by: NZhang Tianxing <zhangtianxing3@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
Acked-by: Xiu Jianfeng<xiujianfeng@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

security/integrity/ima/ima_template.c

@@ -23,7 +23,6 @@ static struct ima_template_desc builtin_templates[] = {
 	{.name = "ima-buf", .fmt = "d-ng|n-ng|buf"},
 	{.name = "ima-modsig", .fmt = "d-ng|n-ng|sig|d-modsig|modsig"},
 	{.name = "ima-ns", .fmt = "d-ng|n-ng|ns"},
-	{.name = "ima-ns-sig", .fmt = "d-ng|n-ng|ns|sig"},
 	{.name = "", .fmt = ""},	/* placeholder for a custom format */
 };